This update comes not too long after the previous v1.61.2, but as it focuses mainly on bugfixes and refinement over big new features, it was important to get it out in the wild sooner rather than later. That said, some nice new features are included. Chief among them:

ActionList: Wait for preceding ActionThis is likely something that won't be often used, but will be very useful when it is. This Action does nothing by itself, but only performs it's "When finished" command once all Actions that link to it's input have completed. This is help in cases where you have e.g. two chains of Actions, where both must complete before running anything else - but you don't know which one will complete first. I expect this would be most useful when dealing with dynamic elements such as playing speech in different languages.

Interactive boundariesThis is a new prefab type that can optionally be assigned to a Hotspot. Similar to a Trigger, this represents a volume that the player must be within in order for the Hotspot to be interactive. This should help to prevent "unseen" Hotspots from being inadvertently selected e.g. through walls, when relying on "Player Vicinity" detection.

Blendshape expressionsBlendshape-based expressions were already possible via the Object: Blend shape Action, but its now possible to play them back via the existing [expression:Name] speech text token, which was previously mainly used for portrait graphics. If a character uses expressions and has a Shapeable component, you'll now get an option to link them together. The 3D Demo has been updated to make use of this workflow.

Animated Conversation iconsThis isn't the biggest feature ever, but conversation icons are now animatable. This requires, however, that all Conversations that involve icons need to be upgraded - which is just a matter of viewing the Inspector and saving the scene. This step is necessary even if animations are not used, but to avoid warnings in the Console at runtime you should upgrade your Conversations in this way.

Ummm, I was editing one of my comments in another thread, I tend to edit my comments several times to reword them or fix grammar or typos. But after applying an edit the third time my comment disappeared saying it needs to be approved... is that because of the recent changes done to the forums? that'd never happened to me before...